After a team-up with Firestorm to defeat Killer Frost, Batman must bring together a new team of heroes to create a Justice League to oppose the threat of Darkseid. However, internal dissent may destroy the team before Darkseid can.

Recap

Ronnie Raymond is teaching chemistry using football plans, as his students look on, including Jason. He asks a student to open the window, and the student is immediately frozen solid by... Killer Frost, Ronnie's former girlfriend Louise Lincoln. Ronnie admits that he dumped her, and she's back for revenge. Batman arrives and knocks her outside, and then leaps out the window after her. Ronnie and Jason merge themselves into Firestorm, the Nuclear Man, and aid Batman. She explains that Ronnie broke up with her via text message, and made him pay for all of their dates. Batman helps him despite that, and Firestorm exchanges nuclear fire versus cold blasts. Batman binds her and Firestorm delivers the final blow. As Killer Frost is taken to STAR Labs, Batman warns that arch-enemies can be dangerous. Ronnie figures that arch-enemies and ex-girlfriends are the same...

Batman: Sorry, Frost, but I make it my business to protect innocent lives.Killer Frost: Innocent? You call the man who broke up with me via text message innocent?Batman: Incredible.Jason: Really?Ronnie: Quick and painless. It's the humane thing to do.Killer Frost: I could've handled that indignity if he didn't make me pay for all of our dates.Jason: What is wrong with you, Coach?Ronnie: Hey! How did I become the bad guy here?

Batman: Good job, Firestorm. But remember: arch-enemies can be a deadly business.Jason: Great. Now she's your ex and your arch-enemy.Ronnie: Like there's a difference.

Guy Gardner: Hey, Bats. Is there a reason it's so stinkin' hot in here?Booster Gold: Oh, I think I know the reason. Wingman!Skeets: Right here, sir.Booster Gold: Hello, ladies. I don't believe we've met. The name's Gold. And you can bet I'm as precious as the metal.Fire: We are Fire and Ice. A volatile combination.Ice: Like my mother's peanut butter and sardine slurpees.

Blue Beetle: Invasion? From where?Batman: Apokolips.Ice: Home of the Parthenon.Batman: No. A distant world enslaved by the most evil beings in the known universe.Ice: Ahh! The Greeks!

Guy Gardner: What are you doing in here?Booster Gold: Called dibs, didn't I, Skeets?Skeets: And firsties, Sir.Guy Gardner: You poser. Get out of my cabin right now.Booster Gold: Umm... no, I think I'll stay. (Guy grabs him) Not the face, not the face!

Batman: Boom Tubes. Dimensional portals used by the forces of Apokolips.Aquaman: Then adventure calls.Guy Gardner: Let's get down there so you punks can see a real hero in action.Ice: The Greeks must be stopped!Booster Gold: Got to text my publicist. Skeets! How many p's in "impending"?Skeets: One, sir.Fire: Is this suit too short for world-saving?Blue Beetle: Umm, I wonder if it's short enough?